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What is the use of actionsupport component in Salesforce?
When actionsupport component is used in visualforce pages when events like onblur, onclick, onfocus occurs it triggers JavaScript actions.. When actionsupport component is used in visualforce pages when events like onblur, onclick, onfocus occurs it triggers JavaScript actions.. Salesforce Tutorial Config & Customization Visualforce Pages Apex
What is the use of 'apex:actionsupport' in Visualforce page in Salesforce?
What is the use of 'apex:actionSupport' in Visualforce page in Salesforce? ActionSupport : A component that adds AJAX support to another component, allowing the component to be refreshed asynchronously by the server when a particular event occurs, such as a button click or mouseover.
What is actionactionsupport event?
ActionSupport is added to a particular component like button or outputtext and the event is controlled by the actionsupport not the component thus actionsupport help enhance the compononment itself by being part of the component itself. Kindly mark it as solved if it helps you.
What is actionaction function in Salesforce?
Actionfunction is a function that can be called by any component via onclick, ondbclick, onblur event of that component. <apex:page controller="exampleCon"> <apex:form> <!--
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What is Actionsupport?
A component that adds AJAX support to another component, allowing the component to be refreshed asynchronously by the server when a particular event occurs, such as a button click or mouseover.
What is the difference between Actionsupport and actionFunction?
Action function can call the controller method from java script. 2. Action support adds AJAX support to another visualforce component and then call the controller method. Here action support adds AJAX to output panel, so once you click on output panel controller method will be called.
What is the use of view state in Salesforce?
The view state of a web page is composed of all the data that's necessary to maintain the state of the controller during server requests (like sending or receiving data). Since the view state contributes to the overall size of your page, performance of a page can depend on efficiently managing the view state.
What is Action Region in Salesforce?
actionRegion provides an area of a Visualforce page that decides and separates which components should be processed by the force.com server when an AJAX request is generated. Only the components which are inside actionregion component are processed by server, so it increases visualforce page performance.
What is difference between rendered ReRender and RenderAs in Salesforce?
ReRender- This is to reload some fields, or sections after some operation. Advantage of it is that the whole page is not refreshed and only a portion(the one which is ReRendered) is refreshed. RenderAs- This is to render a VF page as PDF or some other format.
What is AJAX in Salesforce?
AJAX is the art of exchanging data between server and client without reloading the complete web page. Visualforce has inbuilt support for the AJAX. using the attribute “rerender” we can specify that where the response should be rendered.
How do I stop viewstate error?
In order to reduce the view state, make use of the following:"Transient" keyword - to declare instance variables that can't be saved, and shouldn't be transmitted as part of the view state for a VF page. ... Minimize the number of forms i.e
What is heap size limit in Salesforce?
The Heap size truly depends on the type of transaction, Salesforce provides a heap size limit of 6MB for the synchronous transaction and 12 MB for the asynchronous transaction. Whenever too much data is stored during processing an error occurs prompting Apex heap size too large.
What is view state size in Salesforce?
Salesforce allows Visualforce pages to have a maximum view state size of 170KB. The View State tab shows you which elements on your page are taking up that space. A smaller view state size generally means quicker load times. In order to avoid this error, minimize your pages' view state.
What is difference between insert and include?
INSERT is a newer, more powerful and flexible alternative to INCLUDE . Files included with INCLUDE must always adhere to batch syntax rules, and command processing stops when the first error in an included file is encountered.
What is ReRender in Salesforce?
ReRender is used to refresh a particular section of the visual force page. We have to just mention the id of the page section (in the ReRender attribute) that needs to be refreshed. In the following example Clicking of the command button “Refresh Lower Page Block” refreshes the lower page block.
What is transient keyword in Salesforce?
A common use case for the transient keyword is a field on a Visualforce page that is needed only for the duration of a page request, but should not be part of the page's view state and would use too many system resources to be recomputed many times during a request.
What is the difference between function and action in UFT?
Actions helps testers to divide scripts into groups of QTP statements. Actions are similar to functions in VBScript; however, there are a few differences. By default, QTP creates a test with one action....QTP - Actions.ActionsFunctionsActions may or may not be reusable.Functions are always reusable.3 more rows
What is the difference between function and action?
They are basically the same thing, there are no performance advantages when using one or another. The main difference between them is that a function can be used inside expressions directly on the screen, while an action can't.
What is the difference between action and action support?
1. other difference is Action function may be commonly used from different place on page while action support may only be used for particular single apex component.
What is an action function?
Difference is in case of Action function we invoke AJAX using Java script while in case of Action support we may directly. invoke method from controller. 2. Actionfunction is a function that can be called by any component via onclick, ondbclick, onblur event of that component. Example code:
What can an action call in Java?
1. Action function can call the controller method from java script.
Can action add AJAX to another component?
Here action support adds AJAX to output panel, so once you click on output panel controller method will be called. 3. Action function cannot add AJAX support to another component. But from a particular component which has AJAX support (onclick, onblur etc) action function can be called to call the controller method.
